Jeff Crusey

GP @ IceNine

📍 United States🔄 Updated September 2026💼 14 investments📅 4 years investing🗓 Last invested Jan 2026
VC🌍 United States
14
Total investments
9
Early stage
4
Mid stage
1
Late stage
4y
Years active

Portfolio

14 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Angel Investor
2026
Affordable, scalable unmanned systems decide outcomes. Liminal Industries deploys attritable ground drones at scale across defense and commercial environments.
Angel
2026
We are a Georgia-based, vertically integrated manufacturer of high-performance permanent magnets and advanced electrical systems. As America’s only end-to-end permanent magnet producer, we source, refine, and metalize rare earth materials to build the magnets that power the defense, aerospace, and automotive industries, and robotics. We’re building towards a fully independent supply chain that strengthens America’s economic and national security and provides a secure, immediate alternative to foreign dominance in the rare earth market.
early stageManufacturing
Angel
2026
FemtoVox exists because surgery doesn’t have to be so slow, painful and with high complication risk. With our automated image-guided ultrafast laser platform technology, FemtoVox is ushering in a brand-new surgical era with thousandth-of-an-inch precision and 10x less damage than a scalpel. FemtoVox is led by experts who developed three world’s first surgical laser devices, accounting for over 10M surgeries worldwide. FemtoVox is VC-backed, led by First Spark Ventures and Mayo Clinic Ventures.
Angel Investor
2026
Seasats builds and operates high-endurance, user-friendly autonomous surface vehicles (ASVs) that collect data for defense, research, and commercial customers. Seasats vehicles carry sensors into places that are either too dangerous or too expensive to reach with crewed vessels, drastically reducing operational risks and costs.
Angel Investor
2025
With decades of experience in photonics design, our executive and engineering teams are delivering the world’s first open silicon photonics platform with integrated lasers. You can improve the performance, power efficiency, and reliability of your design using the OpenLight platform for datacom, telecom, LiDAR, healthcare, HPC, AI, and optical computing applications. With over 400 patents and technology adoption by companies across industries, we’re bringing optical solutions to places they’ve never been before, and we’re enabling technologies that weren’t previously possible.
Angel Investor
2025
Monumental Labs is building robot sculpting factories to unleash a renaissance.
mid stageManufacturing
Angel Investor
2025
Portal Space Systems is a Seattle-based space start-up solving the need for mobility in space. Our flagship product, the Supernova satellite bus, is engineered for rapid and long-range in-space maneuverability. Our payload-agnostic, 500 kg spacecraft features a novel solar-thermal propulsion system, which enables an ultra-high delta-v, a 50X improvement over existing products on the market. The company was founded in 2021 by industry leader Jeff Thornburg, alongside COO Ian Vorbach and VP of Engineering Prashaanth Ravindran. We are on a mission to empower the next generation of space operators to maintain space superiority.
Co-founder & Resident Investor
2024
Per Aspera™ exists to accelerate the Renaissance of American industrial, technological, and cultural resilience. The emerging Renaissance demands more than hype cycles and recycled takes. It demands depth, breadth — a higher signal, and a harder push. Each week, our dispatch lands in the inboxes of leaders building the future of American technology. Subscribe to join the Renaissance. 🇺🇸💥🤘 peraspera.us
Angel
2023
Danti is a search engine which focuses on enabling novice and expert users alike to ask simple questions and discover the breadth of information being generated across the Earth today. We have experienced and observed how data silos impact users from commercial and federal users alike. Those impacts span across data sources such as satellites, drones, manned aircraft, terrestrial scanners, analytics firms, to even social media data, public sources and others. We aim to bring the data at any point on Earth to those looking to answer questions. Danti is backed by leading investors in the space, enterprise software, and defense markets and our team has decades of experience building some of the largest data systems within government and the enterprise market.
Angel
2023
Zephr powers next-generation location-based solutions by significantly improving the accuracy and resiliency of GNSS on mobile devices by enabling nearby devices to work together. Zephr’s SDK and supporting cloud APIs allow a network of mobile phones to compute and share corrections that dramatically improve location performance for AdTech, AR, mobility, logistics, insurance, gaming and mapping. The team behind Zephr is composed of a seasoned group of startup veterans with multiple successful exits, and PhDs with a unique set of sophisticated computational skills and business acumen. Zephr is backed by a coalition of top-tier venture capital firms and research labs with deep expertise in PNT technologies.
Angel
2023
Peace through Deterrence
Angel Investor
2023
AI-powered synthetic data on-demand. Quickly build, scale, and deliver high fidelity physical AI models in minutes.
Angel
2022
Epsilon3 is the leading solution for complex engineering, testing and operations. Our intuitive cloud-based platform helps your team plan, build, test and analyze—so you can focus on innovation and growth. With Epsilon3, you can expect: - Standardized operations and workflows - Improved visibility, traceability and scalability - Integrated, compliant and secure deployment - Enhanced communication and collaboration - Reduced errors and overhead costs Epsilon3 is backed by Y Combinator, Lux Capital, and other world-class investors.
Angel
2022
True Anomaly is the only defense technology company focused exclusively on space defense. Founded in 2022 by ex-U.S. Space Force members, True Anomaly designs and builds advanced systems for space superiority: agile and powerful spacecraft platforms, mission software engineered for unmatched command and control, and payloads tailored for precision sensing and effects. We are headquartered in Centennial, Colorado, with regional offices in Colorado Springs, Colorado, Long Beach, California, and Washington, D.C. We are hiring and seeking exceptional talent to join True Anomaly, from any technical industry or background, to bring unique talents, perspective, and solutions. If you embrace complexity, demonstrate relentless ownership, have the resiliency and persistence to overcome challenges. If you’re like us and want your work to carry purpose and shape the future of space, visit www.WhyAreYouHere.com.
Experience · 23 entries
All (23)
Investments (13)
Founder (2)
2026
Angel Investor
2026
Affordable, scalable unmanned systems decide outcomes. Liminal Industries deploys attritable ground drones at scale across defense and commercial environments.
Angel
2026
We are a Georgia-based, vertically integrated manufacturer of high-performance permanent magnets and advanced electrical systems. As America’s only end-to-end permanent magnet producer, we source, refine, and metalize rare earth materials to build the magnets that power the defense, aerospace, and automotive industries, and robotics. We’re building towards a fully independent supply chain that strengthens America’s economic and national security and provides a secure, immediate alternative to foreign dominance in the rare earth market.
early stageManufacturing
Angel
2026
FemtoVox exists because surgery doesn’t have to be so slow, painful and with high complication risk. With our automated image-guided ultrafast laser platform technology, FemtoVox is ushering in a brand-new surgical era with thousandth-of-an-inch precision and 10x less damage than a scalpel. FemtoVox is led by experts who developed three world’s first surgical laser devices, accounting for over 10M surgeries worldwide. FemtoVox is VC-backed, led by First Spark Ventures and Mayo Clinic Ventures.
Angel Investor
2026
Seasats builds and operates high-endurance, user-friendly autonomous surface vehicles (ASVs) that collect data for defense, research, and commercial customers. Seasats vehicles carry sensors into places that are either too dangerous or too expensive to reach with crewed vessels, drastically reducing operational risks and costs.
2025
Director of Technology & Venture Strategy
2025
Blacklake builds companies that solve foundational national security challenges facing private and public sectors. url: blacklake.group
Show all 23 entries ↓
Investment activity
2022–2026 · 14 investments
2022220234202412025320264
Recent (last 2 years)Earlier